Terrestrial Water Storage from GRACE and Satellite Altimetry in the Okavango Delta (Botswana)

被引：5

作者：

Andersen, O. B. ^{[1
]}

Krogh, P. E. ^{[1
]}

Bauer-Gottwein, P. ^{[2
]}

Leiriao, S. ^{[2
]}

Smith, R. ^{[3
]}

Berry, P. ^{[4
]}

机构：

[1] DTU Space, Juliane Maries Vej, DK-2100 Copenhagen, Denmark

[2] DTU Environm, Lyngby, Denmark

[3] De Montfort Univ, Earth & Planetary Remote Sensing Lab, Leicester LE1 9BH, Leics, England

[4] De Montfort Univ, EAPRS Lab, Leicester LE1 9BH, Leics, England

来源：

GRAVITY, GEOID AND EARTH OBSERVATION | 2010年 / 135卷

关键词：

GRAVITY; HYDROLOGY; MODELS; LAND;

D O I：

10.1007/978-3-642-10634-7_69

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

New technology can for the first time enable the accurate retrieval of the global and regional water budgets from space-borne and ground-based gravity surveys. Water is mankind's most critical natural resource, but it is being heavily used throughout the globe. The aim of this paper is to outline the HYDROGRAV project dealing with improving large scale hydrological model with time variable gravity observations. Also preliminary HYDROGRAV investigationsa of terrestrial water storage variations in the Okavango delta in Botswana are presented. Data from 4 years of satellite altimetry, GRACE derived TWS and GLDAS hydrological model all show a clear annual variation corresponding to the well known seasonality of the delta. However, they also all show an increasing trend in the amount of water storage in the region over the last 4 years.

引用

页码：521 / 526

页数：6

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